Jan smoter



J. SMOTER.

BURGLAR ALARM.

APPLICATION FILED SEPT, 9. 1915.

1,193,306, Patented Aug. 1, 1916.

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FQJ.

J. SMOTER.

BURGLAR ALARM.

APPLICATION FILED SEPT. 9. 1915.

Patented Aug. 1, 1916.

2 $HEETS-SHEET 2.

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JAN SMOTER, F CONEMAUGI-I, PENNSYLVANIA, ASSIGNOR OF ONE-FOURTH TO ADALBERT RYS, OF CONEMAUGH, PENNSYLVANIA.

BURGLAR-ALARM.

Specification of Letters Patent.

Patented Aug. 1, 1916.

Application filed September 9, 1915. Serial No. 49,704.

To all whom it may concern:

Be it known that I, JAN SMOTER, a subject of the Emperor of Austria-Hungary, residing at Conemaugh, in the county of Cambria and State of Pennsylvania, have invented certain new and useful Improvements in Burglar-Alarms, of which the following is a specification;

This invention relates to certain new and useful improvements in burglar alarms.

The primary object of the invention is the provision of an automatic window-operated audible alarm, whereby the persons in the vicinity of the window will be advised whenever the window is actuated in the opening operation.

A further object is to provide actuating mechanism for an alarm clock whereby the alarm thereof will be set in motion in the event of an opening of a window by any person, such as a burglar attempting to gain entrance therethrough.

A still further object is to provide an actu ating means for the controlling shaft of an alarm clock so associated with a window as to be automatically operated during the opening operation but unaffected thereby during the closing of the window.

lVith these general objects in view and others that will appear as the nature of the invention is better understood, the same consists in the novel construction, combination and arrangement of parts hereinafter more fully described, illustrated in the accompanying drawings, and then claimed.

In the drawings forming a part of this application and in which like designating characters refer to corresponding parts throughout the several views :Figure 1 is afront elevation of the device illustrated in connection with a window, and parts being broken away. Fig. 2 is a horizontal sectional view thereof. Fig. 3 is an enlarged detail sectional view taken upon line II1-III of Fig. 2. Fig. 4 is a similar view upon line IVIV of Fig. 2, and, Fig. 5 is a similar view upon line V-V of Fig. 1'.

Referring more in detail to the drawings, the present device may be employed in connection with either the upper or lower sliding sash of any ordinary window and is herewith illustrated in connection with the lower sash l0 slidably mounted in the window casing 11, the side of the wall which is provided with such window being shown at 12, it being understood that the side of the window is illustrated which is within the room or building.

A casing 13 is secured by brackets 14 to the wall 12 and is provided with an alarm clock 15 'removably positioned therein and retained by means of slotted feet 16 carried by the clock and adapted to be removably positioned upon supporting screws 17 arranged interiorly of the casing 13.

A toothed rack 18 is rigidly secured to the edge 19 of the sash 10 and is in constant mesh with a pinion 20 fixed upon a shaft 21 journaled in a socket 22 provided in the adjacent face of the window casing 11. The said shaft 21 projects forwardly of the easing 11 and is arranged in a plane perpendicular to the sash 10 and is provided upon its projecting end with a beveled gear 23. A bracket 24 is carried by the window cas ing 11 and has an axle 25 journaled therein, the said axle being provided with a beveled gear 26 at one end thereof in constant mesh with the afore-mentioned similar gear 23. The opposite end of the axle 25 is provided with a clutch head 27 having inclined toothed faces 28 forming clutch members.

It being understood that the alarm clock 15 may be of any well-known form and provided with the usual alarm bells 29, and with the usual setting shaft 30, the present invention provides a pinion 31 fixed upon the outer free end of the said setting shaft 30. An idle pinion 32 is mounted upon a bracket '33 within the casing 13 and is adapted to mesh with the aforementioned pinion 31 when the alarm clock is opera.- tively positioned within the casing 13. A boss'34 is provided through the rear of the said casing and has a shaft 35 journaled therein, the inner end of which shaft has a pinion 36 secured thereto in constant mesh with the afore-mentioned pinion 32 while a similar pinion 37 is fixed upon the outer end of the said shaft 35.

A connecting rod 38 is journaled in a bracket 39 carried by the wall 12 and a bracket 40 carried by the casing 11 and is provided at one end with a pinion 41 in constant mesh with the aforementioned clock pinion 37. The opposite end of the rod 38 is provided with a squared portion 42 upon which a cooperating clutch disk 43 is slidably mounted and is normally held in resilient engagement with the clutch teeth 28 of the head 27 by means of an expansion spring 4-4 interposed between the clutch disk 43 and the bracket 40 and encircling the said rod 38.

From this detailed description of the device, the complete operation thereof will be apparent.

The alarm clock 15 having the usual alarm mechanism thereof wound up and set so as to operate at any desired time, the clock is then positioned within the casing 13, with the pinion 31 of the said shaft 30 of the alarm in mesh with the adjacent pinion 32 whereby the said set shaft is operatively connected to the rod 38 by means of the pinions 36, 37 and 41 and the said shaft 35. The raising of the window sash 10 results in rotating the shaft 21 through the agency of the gear 20 and the sash rack 18, such operation resulting in turning the gear 23 and the gear 26 so that the rod 88 is revolved as the clutch members 27 and 43 are in their normal operative positions. Such revolving of the rod 38 turns the setting shaft 30 of the alarm mechanism and as soon as the shaft. positions the mechanism at the predetermined time at which the alarm was desired to operate the alarm being then released will be sounded, giving an audible signal which denotes that the sash has been opened. The rod 38 is not affected by the lowering of the sash 10 as the clutch disk 43 will ratchet over the teeth 28 of the disk head 27 when the axle 25 is reversely revolved during the sash closing operation, it being seen that the adjacent end d5 of the rod 38 is freely journaled within a central bore 46 of the axle 25 and that during this ratcheting operation, the disk-43 slides upon the squared portion 4C2 of the rod without being revolved by the said clutch head 27. A serviceable burglar alarm for a window sash is thus provided which will advise the occupants of a house of any opening of the window sash while the clock employed for giving the alarm is not interrupted in its use as a time-piece in the house-hold.

lVhile the form of the invention herein shown and described is what is believed to be the preferred embodiment thereof, it is nevertheless to be understood that various forms, modifications and arrangements of the parts may be made without departing from the spirit and scope of the invention as claimed.

What I claim as new is 1. A burglar alarm comprising in combination with a shiftable window sash, a shaft journaled adjacent said sash, an alarm clock positioned adjacent said sash, a removable rod operatively connected at one end to the setting mechanism of the alarm of the clock, and operative connections between the opposite end of the said rod and the said shaft operable only during the opening of the window.

2. A burglar alarm comprising in combination with a sliding sash'and an alarm clock having a setting shaft for the alarm thereof, a rod revo-lubly-mounted and d tachably operably connected with the said setting shaft, and releasable operative connections between the opposite end of the said rod and the said sash.

3. A burglar alarm comprising in combination with a slidingsash and an alarm clock having a setting shaft for the alarm thereof, a rod revolubly-mounted and detachably operably connected with the said setting shaft, a stub-shaft journaled adjacent the said sash, rack and gear connections between the said stub-shaft and sash, a clutch head operatively connected to said stub-shaft, and automatically releasable clutching means between the said rod and head in operative engagement during the opening of the sash.

4. A burglar alarm comprising in combination with a sliding sash of a window, a casing having an open front and secured adjacent the said sash, an alarm clock removably positioned within the said casing and having a setting shaft for the alarm mechanism thereof, an axle journaled adjacent the said sash, operative connections between the said axle and sash, a clutch head JAN SMOTER.

Gopis of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). G. i 

